The Wizard Thrane dabbled in time travel and created the key. It works by opening multiple doors so that hopefully the one used will be last to close.

Each key has only a set number of uses. The only known key was a prize in the last Talisman's Hie. Sebastian Wroth used it to retrieve Kaderin the Cold Hearted and together they retrieved her sisters Dasha and Rika.

Riora gave another uses of it to Sebastian Wroth. He plans to retrieve his sisters with it.